code: def test_eight_schools_build(posterior):
      """Verify eight schools compiles."""
      assert posterior is not None
  
file_path: pystan/tests/test_eight_schools.py
imports: import numpy
  import pandas
  import pytest
  import stan
label_desc: Use image node_id 2 for calling a global function with example usage: test_eight_schools_build(posterior) without return types